I'm in $20. Now that NEVERSOFT has stopped making Guitar Hero games (HURRAY! -- Even though another company will be doing it now instead...), hopefully they will go back to the Tony Hawk series, and release a really polished effort, like THPS 3, 4, THUG were.
Proving Ground, while good (and extremely challenging) had a lot of B-team members, a few of the A-team members had moved onto Guitar Hero 3 I'm guessing.